It's a pity that you couldn't end this game because there is a lot of potential,  The concept is really interesting but as you said, lack of feedbacks for the player but everything that has been done is pretty well done. I 'm really curious about what you 'll produce in another Game jam !

the idea is interesting and i would like a tutorial about how the rewind works and have a more impact when you rewind like a buzz or a glitchy effect over all good job.